22347444 has 96 divisors (see below), whose sum is σ = 63866880. Its totient is φ = 5943168.

The previous prime is 22347443. The next prime is 22347491. The reversal of 22347444 is 44474322.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22347443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82942 + ... + 83210.

It is an arithmetic number, because the mean of its divisors is an integer number (665280).

Almost surely, 2^22347444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22347444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31933440).

22347444 is an abundant number, since it is smaller than the sum of its proper divisors (41519436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22347444 is a wasteful number, since it uses less digits than its factorization.

22347444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349 (or 347 counting only the distinct ones).

The product of its digits is 21504, while the sum is 30.

The square root of 22347444 is about 4727.3083250408. The cubic root of 22347444 is about 281.6713136417.

It can be divided in two parts, 22347 and 444, that added together give a triangular number (22791 = T₂₁₃).

The spelling of 22347444 in words is "twenty-two million, three hundred forty-seven thousand, four hundred forty-four".